Boba Maths

Year 5 · Summer term · Decimals · Step 10

Year 5 Multiply by 10, 100 and 1,000 worksheets

Multiply whole numbers and decimals by 10, 100 and 1,000 using place value. A free editable Word sheet with eight fluency and six reasoning questions. The answers follow the questions: the same sheet again with every answer in red.

Download the worksheets

Print on A4 portrait: every page carries the sheet twice, side by side, so you can cut down the middle and two pupils each get a half to stick in their books. Every question sits in its own box and pupils write their answers in their book. The answers follow the questions in the file: the same sheet again with every answer in red. It opens in Word, Google Docs, Pages and LibreOffice, so you can change numbers, delete questions or add your own. There is no scaffolded version of this step yet.

Not scaffolded sheet

First page of the not scaffolded Multiply by 10, 100 and 1,000 sheet, printed twice side by side

The same questions without the extra support. For pupils working at the expected standard: eight fluency questions first, then the reasoning questions.

Answer in your book (.docx)

Sample questions from this step

These are real questions from the first set of the sheet (two from the fluency page, two from the reasoning page). Open each one to see the answer.

  1. Each place value chart shows a number. Multiply the number by 10. Write the answer.
    HTOTthHth
    a) the number × 10 = ____
    HTOTthHth
    b) the number × 10 = ____
    Show the answer

    42; 205.2

  2. Work out each multiplication. Every digit moves 2 places to the left.
    a) 61.384 × 100 = ____
    b) 81.157 × 100 = ____
    c) 84.07 × 100 = ____
    d) 55.5 × 100 = ____
    Show the answer

    6,138.4; 8,115.7; 8,407; 5,550

  3. Tiny works out 1.6 × 1,000.
    1.6 × 1,000 = 1.6000
    Is Boba correct? Circle yes or no.
    Circle yes or no.
    Explain the mistake. Then write the correct answer.
    ____
    Show the answer

    No; No. Tiny just added zeros after the decimal. The digits move 3 places to the left, so the answer is a whole number: 1,600. The correct answer is 1,600.; 1,600

  4. Which of these are equal to 290? Write the letters.
    A: 29 × 10
    B: 0.29 × 1,000
    C: 2.9 × 100
    D: 29 × 100
    ____
    Show the answer

    A, B, C

What is on each sheet

  • Fluency: eight questions that start easy and get harder, with the key skill of the step practised in different ways.
  • Reasoning: questions with pictures, tables and number lines (spot the mistake, true or false and explain, puzzles with one answer, an open-ended task).
  • Answers in the same file: the sheet again with every answer in red, so there is only one file to download.
  • Boba characters give the instructions in speech bubbles. They are decoration only.

Why one set of questions?

More in Decimals

All Decimals steps · Year 5 overview